I think you would like Christ's College in the centre, the postcode is cb23bu and the entrance is free.
Thank you very much for your help!
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attraction-name attraction-type train-day train-departure train-destination train-leaveat train-people
attraction-name attraction-type train-day train-departure train-destination train-leaveat train-people
attraction-name attraction-type train-day train-departure train-destination train-leaveat train-people